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| -rw-r--r-- | manual/getopt.texi | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/manual/getopt.texi b/manual/getopt.texi index 5485fc4694..b4c0b15ac2 100644 --- a/manual/getopt.texi +++ b/manual/getopt.texi @@ -250,7 +250,8 @@ option, and stores the option's argument (if it has one) in @code{optarg}. When @code{getopt_long} encounters a long option, it takes actions based on the @code{flag} and @code{val} fields of the definition of that -option. +option. The option name may be abbreviated as long as the abbreviation is +unique. If @code{flag} is a null pointer, then @code{getopt_long} returns the contents of @code{val} to indicate which option it found. You should |